The "mid90s" director took to Instagram on Tuesday to celebrate getting his first Jiu Jitzu stripe, and his weight loss transformation -- which has been intensely documented over the years -- is evident. Hill, 35, looks happy and healthy in the photo and got reflective in a lengthy caption about his appreciation for Jiu Jitzu.
"I started Brazilian Jiu Jitzu 2 months ago and try and train 4 or 5 times a week," he revealed. "In high school the dudes who did Jiu Jitzu used to beat the shit out of us at parties so it turned me off to it as an idea growing up. But quietly I always thought it was a beautiful art form."
"At 35, I try and get over the stuff that made me feel weak and insecure as a teenager," he went on. "It’s just wasted time and lessons you’ll never learn. Trying to let go of that. Nothing more humbling than getting your a-- kicked by a 12 year old your first week."
"Got my first stripe today," he finished. "I know it sounds corny but it’s pretty dope to jump in and do stuff you’d never think you’d be able to do."
See more photos of Jonah Hill's transformation through the years:
Jonah Hill's transformation through the years
Jonah Hill's transformation through the years
Jonah Hill during 'Miami Vice' Los Angeles Premiere - Arrivals at Mann Village in Westwood, California, United States. (Photo by SGranitz/WireImage)
Jonah Hill during '10 Items or Less' Los Angeles Premiere - Arrivals at Paramount Theater in Los Angeles, California, United States. (Photo by J.Sciulli/WireImage)
HOLLYWOOD, CA - APRIL 10: Jonah Hill attends The Universal Pictures Premiere of Forgetting Sarah Marshall at Graumans Chinese Theatre on April 10, 2008 in Hollywood, CA. (Photo by ANDREAS BRANCH/Patrick McMullan via Getty Images)
LOS ANGELES, CA - DECEMBER 09: Actor Jonah Hill attends the Innovative Skin Care Suite at the 7th Annual Breakthrough of the Year Awards on December 9, 2007 in Hollywood, California. (Photo by Amy Graves/WireImage)
WESTWOOD, CA - DECEMBER 03: Jonah Hill and Michael Cera at the premiere of Fox Searchlight's 'Juno' at the Village Theater on December 3, 2007 in Westwood, California. (Photo by Jeff Kravitz/FilmMagic)
MADRID, SPAIN - OCTOBER 18: (L to R) Actors Christopher Minte-Plasse, Michael Cera and Jonah Hill attend a photocall for Superbad, at Journalism Faculty on October 18, 2007 in Madrid, Spain (Photo by Lalo Yasky/WireImage)
Actor Jonah Hill at the photocall for the film, 'Suxbad.' (Photo by camilla morandi/Corbis via Getty Images)
TONIGHT SHOW WITH JAY LENO -- Episode 3426 -- Pictured: Actor Jonah Hill during an interview on August 30, 2007 (Photo by Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)
Producer Steven Spielberg (L) and actor Jonah Hill pose for a photo at a dedication ceremony for the Universal Studios newly rebuilt New York Street backlot locations, in Los Angeles on May 27, 2010. Universal Studios rebuilt the 13 city blocks of newly created filming locations on four acres at the historic studio lot in the largest construction project in studio history. The previous backlot location burnt down in an accidental fire on June 1, 2008 AFP PHOTO/Mark RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
LOS ANGELES, CA - NOVEMBER 09: Actor Jonah Hill and girlfriend Danielle arrive at The Behind the Camera Awards presented by Hamilton and Hollywood Life at The Highlands on November 9, 2008 in Los Angeles, California. (Photo by Gregg DeGuire/WireImage)
HOLLYWOOD - NOVEMBER 09: Actor Jonah Hill speaks during Hollywood Life's Behind the Camera Awards at The Highlands on November 9, 2008 in Hollywood, California. (Photo by Frederick M. Brown/Getty Images)
LOS ANGELES, CA - MAY 07: Jonah Hill attends the Los Angeles Lakers against Utah Jazz playoff game at the Staples Center on May 7, 2008 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)
NBC NEWS -- Air Date 04/13/2008 -- Pictured: Jonah Hill attends Comedy Central's ' A Night of Too Many Stars,' a benefit for autism at the Beacon Theatre in New York, NY on April 13, 2008 -- Photo by: Curtis Means/NBC NewsWire
HOLLYWOOD - APRIL 10: Actor Jonah Hill arrives at Universal Pictures' World Premiere of 'Forgetting Sarah Marshall' on April 10, 2008 at Grauman's Chinese Theater in Hollywood, California. (Photo by Jason Merritt/FilmMagic)
LOS ANGELES, CA - NOVEMBER 29: Jonah Hill attends a game between the New Jersey Nets and the Los Angeles Lakers at Staples Center on November 29, 2009 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)
ï¿½2009 RAMEY PHOTO NO SPAIN/ NO ITALY/ NO RUSSIA Los Angeles, Nov 19 2009 JONAH HILL looks sharp, as he walks back to his car after visiting the Dentist in Beverly Hills. PGpg68 (Photo by Philip Ramey/Corbis via Getty Images)
Jonah Hill arrives at the Los Angeles premiere of 'The Invention Of Lying' at the Grauman's Chinese Theatre on September 21, 2009 in Hollywood, California. (Photo by Steve Granitz/WireImage)
LATE NIGHT WITH JIMMY FALLON -- Episode 958 -- Pictured: Jonah Hill on Thursday, January 23, 2014 -- (Photo by: Lloyd Bishop/NBC/NBCU Photo Bank via Getty Images)
BEVERLY HILLS, CA - JANUARY 12: 71st ANNUAL GOLDEN GLOBE AWARDS -- Pictured: Actor Jonah Hill arrives to the 71st Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 12, 2014 -- (Photo by Christopher Polk/NBC/NBC via Getty Images)
TODAY -- Pictured: (l-r) Brad Pitt and Jonah Hill appear on NBC News' 'Today' show (Photo by Peter Kramer/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4172 -- Pictured: Actor Jonah Hill arrives on December 22, 2011 -- Photo by: Paul Drinkwater/NBC/NBCU Photo Bank
BEVERLY HILLS, CA - DECEMBER 29: Actor Jonah Hill arrives at Golden Globe and SAG nominee Jonah Hill's private celebrity home gourmet pizza party hosted by Renee Taylor and Joe Bologna on December 29, 2011 in Beverly Hills, California. (Photo by Allen Berezovsky/Getty Images)
BURBANK, CA - DECEMBER 22: Actor Jonah Hill appears on the Tonight Show With Jay Leno at NBC Studios on December 22, 2011 in Burbank, California. (Photo by Kevin Winter/NBCUniversal/Getty Images)
NEW YORK, NY - DECEMBER 06: Jonah Hill attends 'The Sitter' premiere at Chelsea Clearview Cinemas on December 6, 2011 in New York City. (Photo by Astrid Stawiarz/Getty Images)
NEW YORK, NY - DECEMBER 05: Jonah Hill arrives for the 'Late Show With David Letterman' at the Ed Sullivan Theater on December 5, 2011 in New York City. (Photo by Donna Ward/Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4131 -- Pictured: Actor Jonah Hill during an interview on October 24, 2011 -- Photo by: Paul Drinkwater/NBC/NBCU Photo Bank
Jonah Hill arriving at the Bafta After Party at the Grosvenor Hotel in London. (Photo by Ian West/PA Images via Getty Images)
EAST RUTHERFORD, NJ - SEPTEMBER 09: Actor Jonah Hill attends the Buffalo Bills vs New York Jets game at MetLife Stadium on September 9, 2012 in East Rutherford, New Jersey. (Photo by Al Pereira/WireImage)
THE OSCARS(r) - RED CARPET ARRIVALS - The Academy Awards(r) for outstanding film achievements of 2013 will be presented on Oscar Sunday, MARCH 2 (8:00-11:00 p.m., ET/5:00-8:00 p.m., PT), at the Dolby Theatre(r) at Hollywood & Highland Center(r) and televised live on the ABC Television Network. (Photo by Rick Rowell/ABC via Getty Images)
Jonah Hill attends 'The Wolf of Wall Street' US Premiere at the Ziegfeld Theatre in New York City. ?? LAN (Photo by Lars Niki/Corbis via Getty Images)
NEW YORK, NY - DECEMBER 17: Actors Jonah Hill and Leonardo DiCaprio attend the 'The Wolf Of Wall Street' premiere at the Ziegfeld Theatre on December 17, 2013 in New York City. (Photo by Dimitrios Kambouris/WireImage)
HOLLYWOOD, CA - NOVEMBER 16: Actor Jonah Hill arrives at the Academy of Motion Picture Arts and Sciences' Governors Awards at The Ray Dolby Ballroom at Hollywood & Highland Center on November 16, 2013 in Hollywood, California. (Photo by Frederick M. Brown/Getty Images)
CULVER CITY, CA - AUGUST 25: Actor Jonah Hill (L) and roast master Seth Rogen onstage during The Comedy Central Roast of James Franco at Culver Studios on August 25, 2013 in Culver City, California. The Comedy Central Roast Of James Franco will air on September 2 at 10:00 p.m. ET/PT. (Photo by Jason Merritt/Getty Images for Comedy Central)
NEW YORK, NY - NOVEMBER 18: Jonah Hill is seen in New York City on November 18, 2014 in New York City. (Photo by Ignat/Bauer-Griffin/GC Images)
HOLLYWOOD, CA - NOVEMBER 14: Actor Jonah Hill speaks onstage during the 18th Annual Hollywood Film Awards at The Palladium on November 14, 2014 in Hollywood, California. (Photo by Jeff Kravitz/FilmMagic)
LOS ANGELES, CA - SEPTEMBER 05: Jonah Hill is seen in Studio City on September 05, 2014 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
Jonah Hill arriving for the UK Premiere of The Wolf of Wall Street, at the Odeon Leicester Square, London. (Photo by Ian West/PA Images via Getty Images)
Actor Jonah Hill arrives at the premiere of '22 Jump Street' held at the Regency Village Theatre in Westwood. (Photo by Frank Trapper/Corbis via Getty Images)
WESTWOOD, CA - JUNE 10: Actors Channing Tatum and Jonah Hill arrive for the Premiere Of Columbia Pictures' '22 Jump Street' held at Regency Village Theatre on June 10, 2014 in Westwood, California. (Photo by Albert L. Ortega/Getty Images)
WESTWOOD, CA - FEBRUARY 01: Actor Jonah Hill attends the Premiere of Universal Pictures' 'Hail, Caesar!' at the Regency Village Theatre on February 1, 2015 in Westwood, California. (Photo by Barry King/Getty Images)
NEW YORK, NY - JULY 14: Actor Jonah Hill is seen walking in Soho on July 14, 2015 in New York City. (Photo by Raymond Hall/GC Images)
LOS ANGELES, CA - NOVEMBER 15: Jonah Hill attends SAG-AFTRA Foundation's Conversations for 'War Dogs' at SAG Foundation Actors Center on November 15, 2016 in Los Angeles, California. (Photo by Tibrina Hobson/Getty Images)
LOS ANGELES, CA - DECEMBER 14: Actor Jonah Hill is seen on December 14, 2016 in Los Angeles, California. (Photo by SMXRF/Star Max/GC Images)
Actor Jonah Hill attends the 8th Annual Governors Awards hosted by the Academy of Motion Picture Arts and Sciences on November 12, 2016, at the Hollywood & Highland Center in Hollywood, California.
The Academy's Board of Governors is presenting Honorary Oscar Awards to actor Jackie Chan, film editor Anne Coates, casting director Lynn Stalmaster and documentary filmaker Frederick Wiseman. / AFP / Valerie Macon (Photo credit should read VALERIE MACON/AFP/Getty Images)
NEW YORK, NY - SEPTEMBER 21: Actors Jonah Hill, Leonardo DiCaprio and Martin Scorsese attend as the Friars Club Honors Martin Scorsese With Entertainment Icon Award at Cipriani Wall Street on September 21, 2016 in New York City. (Photo by Kevin Mazur/WireImage)
DEAUVILLE, FRANCE - SEPTEMBER 10: Actor Jonah Hill attends the 'War Dogs' Photocall during the 42nd Deauville American Film Festival on September 10, 2016 in Deauville, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
SATURDAY NIGHT LIVE -- Episode 1733 -- Pictured: (l-r) Jonah Hill, Seth Rogen during 'Audience Questions Cold Open' in Studio 8H on Saturday, December 9, 2017 -- (Photo by: Will Heath/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - DECEMBER 08: Jonah Hill spotted at a Boxing Gym in Manhattan on December 8, 2017 in New York City. (Photo by Robert Kamau/GC Images)
NEW YORK, NY - JULY 30: Actor Jonah Hill is seen NoHo on July 30, 2017 in New York City. (Photo by TheStewartofNY/GC Images)
LOS ANGELES, CA - MAY 16: Jonah Hill is seen on May 16, 2017 in Los Angeles, California. (Photo by BG005/Bauer-Griffin/GC Images)
LOS ANGELES, CA - JANUARY 29: Jonah Hill arrives at the 23rd Annual Screen Actors Guild Awards at The Shrine Expo Hall on January 29, 2017 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
NEW YORK, NY - FEBRUARY 26: Jonah Hill seen on the streets of Manhattan on February 26, 2018 in New York City. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
PARK CITY, UT - JANUARY 19: Actor Jonah Hill attends the 'Don't Worry, He Won't Get Far On Foot' Premiere during the 2018 Sundance Film Festival at Eccles Center Theatre on January 19, 2018 in Park City, Utah. (Photo by C Flanigan/FilmMagic)
NEW YORK, NY - MARCH 13: Jonah Hill is seen in NoHo on March 13, 2018 in New York City. (Photo by TheStewartofNY/GC Images)
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Back in October, Hill opened up about his weight loss struggle in a candid interview on "The Ellen DeGeneres Show," where he explained how the body image issues that he developed as a teenager have stayed with him well into his thirties.
"I think everybody has a version of themselves -- I call it a snapshot -- at some point in life... [you’re] trying to hide from the world. Even if you get success or grow up or become good-looking or whatever ... you kind of carry some part of that with you," he said. "For me, it’s definitely being like this 14-year-old kid, being overweight, wanting to fit in with these skaters and hip-hop kids, and just feeling lonely and maybe not understanding my own worth.”
"I spent most of my young adult life listening to people say I was fat, gross, and unattractive," he added. "And it’s only in the last four years writing and directing my movie, 'Mid90s,' that I’ve started to understand how much that hurt and got into my head."
More celebrity weight loss transformations:
Shocking celebrity weight-loss transformations
Shocking celebrity weight-loss transformations
Mama June in 2013
Mama June in 2017
The "Honey Boo Boo" star documented her weight loss journey on her very own reality show! She is now down to a size 4 -- and she looks incredible!
Khloe Kardashian in 2012
Khloe Kardashian in 2016
Hard work does pay off! The youngest Kardashian sister is obsessed with exercising and documents all her workout sessions on social media.
Lena Dunham in 2015
Lena Dunham in 2017
The "Girls" star lost a significant amount of weight after going on a holistic diet to help alleviate symptoms of endometriosis.
Wendy Williams in 2012
Wendy Williams in 2017
The TV personality revealed in 2015 that she lost 50 pounds over the course of three years with a healthy diet that doesn't include refined sugars, meat, dairy or "eating after dark." It looks like she's been committed to the strict diet. She looks better than ever in 2017!
Ricki Lake in 2010
Ricki Lake in 2011
The actress lost 20 pounds when she appeared on "Dancing With the Stars" in 2011.
Jordin Sparks in 2008
Jordin Sparks in 2017
Hard work pays off! "American Idol" alum began her weight loss journey by walking around her neighborhood and the rest was history! Her favorite workout? Zumba.
Sara Rue in 2003
Sara Rue in 2016
The "Rules of Engagement" star is a total fan of Jenny Craig for its simplicity. She looks incredible and totally glowing!
Jonah Hill in 2014
Jonah Hill in 2017
Talk about a transformation! Hill has lost weight and gained weight through the years -- depending on the movie he's working on -- but his latest transformation is absolutely jaw-dropping.
Christina Aguilera in 2012
Christina Aguilera in 2013
Smoke show! The songstress dropped 20 pounds over the course of one year. Doesn't she look incredible?!
Miranda Lambert in 2012
Miranda Lambert in 2013
The country crooner slammed critics who accused her of having weight loss surgery. She revealed that she dropped the pounds the old-fashioned way -- eating right and working out with her trainer!